wordpress如何修改主题名称,嘉兴网站广优化公司,公司网站可以不买域名吗,网站空间商是什么意思1.开发背景 基于上一个篇章 GPIO 使用#xff0c;引入中断的使用。
2.开发需求 PS 和 PL 按键输入中断#xff0c;并输出对应的日志打印
3.开发环境 Zynq7020 Vivado2017.4
4.实现步骤
4.1 设计配置 PL Key0 56
PS key0 12
PS key1 11
4.2 代码编写
GPIO 配置
#if…1.开发背景 基于上一个篇章 GPIO 使用引入中断的使用。
2.开发需求 PS 和 PL 按键输入中断并输出对应的日志打印
3.开发环境 Zynq7020 Vivado2017.4
4.实现步骤
4.1 设计配置 PL Key0 56
PS key0 12
PS key1 11
4.2 代码编写
GPIO 配置
#ifndef MSP_GPIO_H
#define MSP_GPIO_H#include xgpiops.h/* PS GPIO 映射 */
#define BOARD_LED0 (7)
#define BOARD_KEY0 (12)
#define BOARD_KEY1 (11)
#define CORE_LED (0)/* PL GPIO 映射 */
#define EMIO_LED0 (54)
#define EMIO_LED1 (55)
#define EMIO_KEY0 (56)int mspGpio_Init(void);
void mspGpio_SetOutput(unsigned char gpioId, unsigned char state);
unsigned char mspGpio_GetInput(unsigned char gpioId);XGpioPs* mspGpio_GetPsHandle(void);#endif#include mspGpio.h/* gpio 设备不知为何为 0 */
#define GPIO_DEVICE_ID XPAR_XGPIOPS_0_DEVICE_ID // 0static XGpioPs s_psGpio {0};/* GPIO 初始化 */
int mspGpio_Init(void)
{/* 通过设备 ID 找到对应的配置指针 */XGpioPs_Config *ConfigPtr XGpioPs_LookupConfig(GPIO_DEVICE_ID);/* 通过配置指针初始化GPIO */int Status XGpioPs_CfgInitialize(s_psGpio, ConfigPtr,ConfigPtr-BaseAddr);if (Status ! XST_SUCCESS){return -1;}/* 设置 GPIO 方向输出这里为什么会共用一个 GPIO 结构体参数一致 */XGpioPs_SetDirectionPin(s_psGpio, CORE_LED, 1);XGpioPs_SetDirectionPin(s_psGpio, BOARD_LED0, 1);XGpioPs_SetDirectionPin(s_psGpio, BOARD_KEY0, 0);XGpioPs_SetDirectionPin(s_psGpio, BOARD_KEY1, 0);XGpioPs_SetDirectionPin(s_psGpio, EMIO_LED0, 1);XGpioPs_SetDirectionPin(s_psGpio, EMIO_LED1, 1);XGpioPs_SetDirectionPin(s_psGpio, EMIO_KEY0, 0);/* 使能 GPIO */XGpioPs_SetOutputEnablePin(s_psGpio, BOARD_LED0, 1);XGpioPs_SetOutputEnablePin(s_psGpio, CORE_LED, 1);XGpioPs_SetOutputEnablePin(s_psGpio, EMIO_LED0, 1);XGpioPs_SetOutputEnablePin(s_psGpio, EMIO_LED1, 1);return 0;
}/* 设置输出 */
void mspGpio_SetOutput(unsigned char gpioId, unsigned char state)
{XGpioPs_WritePin(s_psGpio, gpioId, state);
}/* 获取输入 */
unsigned char mspGpio_GetInput(unsigned char gpioId)
{return XGpioPs_ReadPin(s_psGpio, gpioId);
}/* 获取 PS GPIO 句柄 */
XGpioPs* mspGpio_GetPsHandle(void)
{return s_psGpio;
}中断配置
#include mspExit.h#include xscugic.h#include mspCore.h
#include mspGpio.h
#include mspTimer.hstatic XScuGic intc {0}; //通用中断控制器驱动实例//以下常量映射到xparameters.h文件
#define GPIO_DEVICE_ID XPAR_XGPIOPS_0_DEVICE_ID //PS端GPIO器件ID
#define INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID //通用中断控制器ID
#define GPIO_INTERRUPT_ID XPAR_XGPIOPS_0_INTR //PS端GPIO中断IDstatic void intr_handler(void *callback_ref);/* 初始化中断接口 */
int setup_interrupt_system(XScuGic *gic_ins_ptr, XGpioPs *gpio, u16 GpioIntrId)
{int status;XScuGic_Config *IntcConfig; //中断控制器配置信息//查找中断控制器配置信息并初始化中断控制器驱动IntcConfig XScuGic_LookupConfig(INTC_DEVICE_ID);if (NULL IntcConfig){return XST_FAILURE;}status XScuGic_CfgInitialize(gic_ins_ptr, IntcConfig,IntcConfig-CpuBaseAddress);if (status ! XST_SUCCESS){return XST_FAILURE;}//设置并使能中断异常Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,(Xil_ExceptionHandler) XScuGic_InterruptHandler, gic_ins_ptr);Xil_ExceptionEnable();//为中断设置中断处理函数status XScuGic_Connect(gic_ins_ptr, GpioIntrId,(Xil_ExceptionHandler) intr_handler, (void *) gpio);if (status ! XST_SUCCESS){return status;}//使能来自于Gpio器件的中断XScuGic_Enable(gic_ins_ptr, GpioIntrId);//设置KEY按键的中断类型为下降沿中断XGpioPs_SetIntrTypePin(gpio, BOARD_KEY0, XGPIOPS_IRQ_TYPE_EDGE_FALLING);XGpioPs_SetIntrTypePin(gpio, BOARD_KEY1, XGPIOPS_IRQ_TYPE_EDGE_FALLING);XGpioPs_SetIntrTypePin(gpio, EMIO_KEY0, XGPIOPS_IRQ_TYPE_EDGE_FALLING);//使能按键KEY中断XGpioPs_IntrEnablePin(gpio, BOARD_KEY0);XGpioPs_IntrEnablePin(gpio, BOARD_KEY1);XGpioPs_IntrEnablePin(gpio, EMIO_KEY0);return XST_SUCCESS;
}/* 中断初始化 */
int mspExit_Init(void)
{setup_interrupt_system(intc, mspGpio_GetPsHandle(), XPAR_XGPIOPS_0_INTR);return 0;
}/* 中断处理 */
void intr_handler(void *callback_ref)
{/* 强行延时 */
// mspTimer_DelayMs(100);XGpioPs *gpio (XGpioPs *) callback_ref;//读取KEY按键引脚的中断状态判断是否发生中断if (XGpioPs_IntrGetStatusPin(gpio, BOARD_KEY1)){printf(key %d\r\n, BOARD_KEY1);XGpioPs_IntrClearPin(gpio, BOARD_KEY1); //清除按键KEY中断}else if (XGpioPs_IntrGetStatusPin(gpio, BOARD_KEY0)){printf(key %d\r\n, BOARD_KEY0);XGpioPs_IntrClearPin(gpio, BOARD_KEY0); //清除按键KEY中断}else if (XGpioPs_IntrGetStatusPin(gpio, EMIO_KEY0)){printf(key %d\r\n, EMIO_KEY0);XGpioPs_IntrClearPin(gpio, EMIO_KEY0); //清除按键KEY中断}
}
4.3 运行结果
